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目的全面、准确了解昆山市碘盐质量,为有关部门的监督管理和实施全民加碘提供科学依据,确保居民食用盐中碘的含量,彻底消除碘缺乏病。方法根据《全国碘盐监测方案》,地区内按东、南、西、北、中5个方位抽取9个乡,每个乡抽4个村,每个村抽取8份盐样,共采集288份盐样检测其含碘量。盐业公司每月采集9份样品分析。结果检测盐业公司碘盐240份,盐业公司碘盐合格率为100%,均值为30.3 mg/kg,变异系数(CV)为8%,碘含量比较稳定。2008—2011年检测居民户碘盐1 152份,碘盐合格率为95.5%、97.9%、97.6%、98.6%,年份间差异无统计学意义(χ2=6.28,P>0.05)。碘盐覆盖率分别为99.3%、100.0%、99.7%、99.0%,年份间差异无统计学意义(χ2=3.35,P>0.05),4年食用碘盐含量的平均数分别为29.6、29.9、29.1和30.3 mg/kg,均数经统计,年份间差异无统计学意义(F=2.56,P>0.05)。结论昆山市居民碘盐合格率已达国家标准,但还要继续坚持以食用加碘盐为主的防治策略,巩固防治成果。
Objective To comprehensively and accurately understand the quality of iodized salt in Kunshan and provide a scientific basis for the supervision and administration of the relevant departments and the implementation of universal iodine to ensure the iodine content of salt consumed by residents and completely eliminate iodine deficiency disorders. Methods According to “National Iodized Salt Surveillance Program”, 9 townships were sampled from 5 locations in the east, south, west, north and south and 4 villages in each township. Eight salt samples were taken from each village and 288 Salt samples were tested for iodine content. The salt company collects 9 samples monthly. Results 240 salt iodized salt companies were detected. Salt companies passed 100% iodized salt with a mean of 30.3 mg / kg and a CV of 8%. The iodine content was relatively stable. In 2008-2011, there were 1 152 iodized salt samples for household use. The qualified rate of iodized salt was 95.5%, 97.9%, 97.6% and 98.6% respectively. There was no significant difference between years (χ2 = 6.28, P> 0.05). The coverage of iodized salt was 99.3%, 100.0%, 99.7% and 99.0%, respectively. There was no significant difference between years (χ2 = 3.35, P> 0.05). The average iodine content in four years were 29.6 and 29.9, 29.1 and 30.3 mg / kg, respectively. The mean was statistically significant. There was no significant difference between years (F = 2.56, P> 0.05). Conclusion The qualified rate of iodized salt in Kunshan City has reached the national standard, but we must continue to adhere to the prevention and control strategies based on iodized salt consumption and consolidate the results of prevention and treatment.